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Grandfather (tentative name) is the maternal grandfather of the Nakano quintuplets and the father of Rena Nakano. He is the manager of the Toraiwa Hot Springs inn.[no citation]

He later fell ill and passed away about three years after the main story and therefore could not attend his granddaughter's wedding with Fuutarou Uesugi.[1]





  1. ^ Manga Chapter 68.
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